Question

A matchstick 5cm long floats on water. The water film has a surface tension of 70 dyne/cm. A little camphor put on one side of matchstick reduces to the surface tension there to 50 dyne/cm. The net force on the stick is A). 6 dynes B) 20 dynes C)100 dynes. D) 600dynes​

Answer 1

Answer:

the answer is option A

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